|
|
The average adult has about 21 square feet of skin.
Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
![Use of fluorescent molecules by Lowenstein and colleagues to determine the size of gap-junction chan](https://biology-forums.com/gallery/47/medium_33_17_06_11_12_21_15.jpeg)
![Where mangrove diversity is high, mangrove species show clear patterns of vertical zonation relative](https://biology-forums.com/gallery/47/medium_33_28_08_11_12_17_16_16021832.jpeg)
![Lungs: RUL = Right Upper Lobe, RML = Right Middle Lobe, RLL = Right Lower Lobe, LUL = Left Upper Lob](https://biology-forums.com/gallery/47/medium_2137_21_07_12_5_28_25.jpeg)